WO2020187194A1

WO2020187194A1 - Communication method and apparatus

Info

Publication number: WO2020187194A1
Application number: PCT/CN2020/079585
Authority: WO
Inventors: 晋英豪; 杨晨晨; 谭巍
Original assignee: 华为技术有限公司
Priority date: 2019-03-21
Filing date: 2020-03-17
Publication date: 2020-09-24
Also published as: EP3934299A1; US20220007274A1; EP3934299A4; CN111726808B; CN111726808A

Abstract

The present application provides a communication method and apparatus, the method comprising: a terminal device receiving a first message from a core network device, wherein the first message comprises a correspondence between indication information of a network slice (NS) supported by the terminal device and an identifier of a non-public network (NPN) supported by the terminal device; the terminal device receiving a second message from a first access network device, wherein the second message is used to indicate an identifier of an NPN supported by the first access network device; and the terminal device determining an NS supported by the first access network device. The technical solution prevents unauthorized users of an NS from accessing said NS, such that the terminal device can perform more services without frequently updating a registration area.

Description

Communication method and device

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office with the application number 201910215478.9 and the application name "Communication Method and Device" on March 21, 2019, the entire content of which is incorporated into this application by reference.

Technical field

This application relates to the field of communication, and more specifically, to a communication method and device.

Background technique

In order to meet the needs of vertical industries in the future, the concept of private networks is proposed, that is, private networks in vertical industries, dedicated to serving users in vertical industries. There are two architectures for private networks, one is independent networking (Standalone), and the other is non-standalone networking (non-standalone). Standalone and public network architectures are independent networks with their own independent network element functions. Non-standalone and public network architectures are the same.

For standalone and non-standalone non-public networks (non-public network, NPN), it is necessary to support closed access group (Closed Access Group, CAG) operations, that is, non-NPN users must not be able to access the NPN The network, at the same time, allows NPN users to access the corresponding network and get the corresponding service.

For non-standalone NPN networks, network slicing can be used to meet the requirements, that is, each NPN network corresponds to a network slice, but the current network slicing method cannot meet the needs of CAG, that is, it cannot allow non-NPN users Access to this network is prohibited.

Summary of the invention

This application provides a communication method and device to ensure user access.

In a first aspect, a communication method is provided, including: a terminal device receives a first message from a core network device, the first message including: indication information of a network slice NS supported by the terminal device and information supported by the terminal device Correspondence of non-public network NPN identifiers; the terminal device receives a second message from the first access network device, and the second message is used to indicate the NPN identifiers supported by the first access network device; The terminal device determines the NS supported by the first access network device.

The terminal device can determine the NS that the terminal device can access by receiving the NPN supported by the first access network device sent by the first access network device, and the corresponding relationship between the NPN supported by the terminal device and the NS, so that the terminal device can access Users who enter the NS access the NS, and users who cannot access the NS are prohibited from accessing the NS, so that the terminal device can perform corresponding service requests under the corresponding NS.

In a second aspect, a communication method is provided, including: a terminal device receives a first message from a core network device, the first message including: indication information of a network slice NS supported by the terminal device and information supported by the terminal device The corresponding relationship of the CAG identifier of the closed access group; the terminal device receives a second message from the first access network device, and the second message is used to indicate the CAG identifier supported by the first access network device; The terminal device determines the NS supported by the first access network device.

The terminal device can determine the NS that the terminal device can access by receiving the CAG supported by the first access network device sent by the first access network device and the corresponding relationship between the CAG and the NS supported by the terminal device, so that it can be accessed Users who enter the NS access the NS, and users who cannot access the NS are prohibited from accessing the NS, so that the terminal device can perform corresponding service requests under the corresponding NS.

With reference to the first aspect or the second aspect, in a possible implementation manner, the method further includes: the terminal device receives a system message SIB from the first access network device, where the SIB includes the identity of the cell The cell is a neighboring cell of the cell where the terminal equipment resides.

The terminal device can learn the neighboring cell of the cell where the terminal device resides through the SIB sent by the first access network device.

With reference to the first aspect or the second aspect, in a possible implementation manner, the SIB further includes an NPN identifier corresponding to the cell or a CAG identifier corresponding to the cell.

The terminal device can know the NPN or CAG supported by the neighboring cell of the cell where the terminal device resides through the SIB sent by the first access network device, so that the terminal device can provide more service requests under the NS.

With reference to the first aspect or the second aspect, in a possible implementation manner, the SIB further includes capability information of the second access network device, and the capability information is used to indicate whether the second access network device can As the capability information of the auxiliary access network device, the second access network device is the access network device where the cell is located.

The terminal device can learn whether the second access network device can provide corresponding service requirements for the terminal device through the capability information of the second access network in the SIB sent by the first access network device.

In a third aspect, a communication method is provided, including: a first access network device obtains a non-public network NPN identifier supported by the first access network device; and the first access network device sends a first access network device to a terminal device. The second message, the second message is used to indicate the NPN identifier supported by the first access network device.

The first access network device sends the NPN supported by the first access network device to the terminal device, so that the terminal device determines the NS corresponding to the NPN supported by the first access network device.

In a fourth aspect, a communication method is provided, including: a first access network device obtains a CAG identifier of a closed access group supported by the first access network device; and the first access network device sends to a terminal device A second message, where the second message is used to indicate the CAG identifier supported by the first access network device.

The first access network device sends the CAG supported by the first access network device to the terminal device so that the terminal device can determine the NS corresponding to the CAG supported by the first access network device.

With reference to the third aspect or the fourth aspect, in a possible implementation manner, the method further includes: the first access network device sends a system message SIB to the terminal device, where the SIB includes information about the identity of the cell Information, the cell is a neighboring cell of the cell where the terminal device resides.

The first access network device sends the neighboring cells of the cell where the terminal device resides to the terminal device, so that the terminal device can request more services under the NS.

With reference to the third aspect or the fourth aspect, in a possible implementation manner, the SIB further includes an NPN identity or a CAG identity corresponding to the cell.

The first access network device sends the NPN or CAG supported by the neighboring cell of the cell where the terminal device resides, so that the terminal device can determine the NS service that the terminal device can request.

With reference to the third aspect or the fourth aspect, in a possible implementation manner, the SIB further includes capability information of the second access network device, and the capability information is used to indicate whether the second access network device can As the capability information of the auxiliary access network device, the second access network device is the access network device where the cell is located.

The first access network device sends the capability information of the second access network so that the terminal device knows whether the second access network device can provide corresponding service requirements for the terminal device.

In a fifth aspect, a communication method is provided, including: a first access network device sends an interface establishment request to a core network device, where the interface establishment request includes indication information of a network slice NS supported by the first access network device and The corresponding relationship between the non-public network NPN identifiers supported by the first access network device; the first access network device receives the interface establishment response sent by the core network device, and the interface establishment response includes the core network device The ID of the supported NPN.

The first access network device uses the NPN identifier supported by the core network device so that the first access network device can determine or modify the NPN identifier supported by the first access network device, so as to provide more NS service requirements for the terminal device.

In a sixth aspect, a communication method is provided, including: an interface establishment request sent by a first access network device to a core network device, where the interface establishment request includes indication information of a network slice NS supported by the first access network device Correspondence with the CAG identifier of the closed access group supported by the first access network device; the first access network device sends an interface establishment response to the core network device, and the interface establishment response includes the core network The identification of the CAG supported by the device.

The first access network device uses the NPN identifier supported by the core network device so that the first access network device can determine or modify the CAG identifier supported by the first access network device, so as to provide the terminal device with more NS service requirements.

With reference to the fifth or sixth aspect, in a possible implementation manner, the method further includes: the first access network device receives a session resource establishment request sent from the core network device, and the session resource The establishment request includes a registered user of the NS corresponding to the session.

The registered user of the NS corresponding to the session sent by the first access network device through the core network can learn the registered user of the NS corresponding to the session, so that the first access network device can determine whether the NS service corresponding to the session can be provided.

With reference to the fifth or sixth aspect, in a possible implementation manner, the method further includes: the first access network device sends an increase request to a second access network device, where the increase request includes the Registered user of NS corresponding to the session.

The second access network device can learn the registered user of the NS corresponding to the session through the registered user of the NS corresponding to the session sent by the first access network device, so that the second access network device can determine whether the NS corresponding to the session can be provided business.

In a seventh aspect, a communication method is provided, including: a core network device receives an interface establishment request sent from a first access network device, where the interface establishment request includes a network slice NS indication supported by the first access network device The corresponding relationship between the information and the non-public network NPN identifier supported by the first access network device; the core network device sends an interface establishment response to the first access network device, and the interface establishment response includes the core network The identifier of the NPN supported by the device.

The core network device obtains the correspondence between the NS indication information supported by the first access network device and the NPN identifier supported by the first access network device, and sends the NPN identifier supported by the core network device to the first access network device for the first access network device. An access network device determines or modifies the NPN identifier supported by the first access network device, so as to provide more NS service requirements for the terminal device.

In an eighth aspect, a communication method is provided, including: a core network device receives an interface establishment request sent from a first access network device, where the interface establishment request includes a network slice NS indication supported by the first access network device The corresponding relationship between the information and the CAG identifier of the closed access group supported by the first access network device; the core network device sends an interface establishment response to the first access network device, and the interface establishment response includes the core The identification of the CAG supported by the network device.

The core network device obtains the correspondence between the NS indication information supported by the first access network device and the CAG identifier supported by the first access network device, and sends the CAG identifier supported by the core network device to the first access network device for the first time An access network device determines or modifies the CAG identifier supported by the first access network device, so as to provide more service requirements under the NS for the terminal device.

With reference to the seventh or eighth aspect, in a possible implementation manner, the method further includes: the core network device sends a session resource establishment request to the first access network device, the session resource establishment request Including the registered users of the NS corresponding to the session.

The core network device sends the registered user of the NS corresponding to the session to the first access network device, so that the first access network device determines whether the NS service corresponding to the session can be provided.

In a ninth aspect, a communication device is provided, including: a receiving unit, configured to receive a first message from a core network device, the first message including: network slice NS indication information supported by the terminal device and the terminal The corresponding relationship between the non-public network NPN identifiers supported by the device; the receiving unit is further configured to receive a second message from the first access network device, and the second message is used to indicate the location of the first access network device Supported NPN identification; processing unit, used to determine the NS supported by the first access network device.

In a tenth aspect, a communication device is provided, including: a receiving unit, configured to receive a first message from a core network device, the first message including: network slice NS indication information supported by the terminal device and the terminal The corresponding relationship between the CAG identifiers of the closed access group supported by the device; the receiving unit is further configured to receive a second message from the first access network device, where the second message is used to indicate that the first access network device supports The CAG identifier; a processing unit for determining the NS supported by the first access network device.

With reference to the ninth aspect or the tenth aspect, in a possible implementation manner, the receiving unit is further configured to receive a system message SIB from the first access network device, where the SIB includes information about the identity of a cell, The cell is a neighboring cell of the cell where the terminal device resides.

With reference to the ninth aspect or the tenth aspect, in a possible implementation manner, the SIB further includes an NPN identity or a CAG identity corresponding to the cell.

With reference to the ninth or tenth aspect, in a possible implementation manner, the SIB further includes capability information of the second access network device, and the capability information is used to indicate whether the second access network device can As the capability information of the auxiliary access network device, the second access network device is the access network device where the cell is located.

In an eleventh aspect, a communication device is provided, including a processor. The processor is coupled with the memory and can be used to execute instructions in the memory to implement the method in any one of the foregoing ninth aspect, tenth aspect, or ninth aspect, and tenth aspect. Optionally, the communication device further includes a memory. Optionally, the communication device further includes a communication interface, and the processor is coupled with the communication interface.

In an implementation manner, the communication device is a terminal device. When the communication device is a terminal device, the communication interface may be a transceiver or an input/output interface.

In another implementation manner, the communication device is a chip configured in a terminal device. When the communication device is a chip configured in a terminal device, the communication interface may be an input/output interface.

In a twelfth aspect, a communication device is provided, including: a receiving unit, configured to obtain a non-public network NPN identifier supported by the first access network device; a sending unit, configured to send a second message to a terminal device, The second message is used to indicate the NPN identifier supported by the first access network device.

In a thirteenth aspect, a communication device is provided, including: a receiving unit, configured to obtain a CAG identifier of a closed access group supported by the first access network device; and a sending unit, configured to send a second message to a terminal device , The second message is used to indicate the CAG identity supported by the first access network device.

With reference to the twelfth aspect or the thirteenth aspect, in a possible implementation manner, the sending unit is further configured to send a system message SIB to the terminal device, where the SIB includes information about the identity of the cell, and the cell It is a neighboring cell of the cell where the terminal device resides.

With reference to the twelfth aspect or the thirteenth aspect, in a possible implementation manner, the SIB further includes an NPN identity or a CAG identity corresponding to the cell.

With reference to the twelfth aspect or the thirteenth aspect, in a possible implementation manner, the SIB further includes capability information of the second access network device, and the capability information is used to indicate the second access network device Whether it can be used as the capability information of the auxiliary access network device, the second access network device is the access network device where the cell is located.

In a fourteenth aspect, a communication device is provided, including a sending unit, configured to send an interface establishment request to a core network device, the interface establishment request including indication information of a network slice NS supported by the first access network device and Correspondence between the non-public network NPN identifiers supported by the first access network device; a receiving unit, configured to receive an interface establishment response sent by the core network device, where the interface establishment response includes the NPN supported by the core network device Logo.

In a fifteenth aspect, a communication device is provided, including: a sending unit, configured to send an interface establishment request to a core network device, the interface establishment request including indication information of a network slice NS supported by the first access network device and The corresponding relationship between the CAG identifiers of the closed access group supported by the first access network device; the receiving unit is configured to receive the interface establishment response sent from the core network device, and the interface establishment response includes the core network device support The logo of the CAG.

With reference to the fourteenth aspect or the fifteenth aspect, in a possible implementation manner, the receiving unit is further configured to receive a session resource establishment request sent from the core network device, where the session resource establishment request includes the Registered user of NS corresponding to the session.

With reference to the fourteenth aspect or the fifteenth aspect, in a possible implementation manner, the sending unit is further configured to send an increase request to the second access network device, where the increase request includes the NS corresponding to the session registered user.

In a sixteenth aspect, a communication device is provided, including a processor. The processor is coupled with the memory and can be used to execute instructions in the memory to implement the method in any one of the above-mentioned twelfth aspect to the fifteenth aspect or any one of the twelfth aspect to the fifteenth aspect. Optionally, the communication device further includes a memory. Optionally, the communication device further includes a communication interface, and the processor is coupled with the communication interface.

In an implementation manner, the communication device is a first access network device. When the communication device is the first access network device, the communication interface may be a transceiver, or an input/output interface.

In another implementation manner, the communication device is a chip configured in an access network device. When the communication device is a chip configured in an access network device, the communication interface may be an input/output interface.

Optionally, the transceiver may be a transceiver circuit. Optionally, the input/output interface may be an input/output circuit.

In a seventeenth aspect, a communication device is provided, including: a receiving unit, configured to receive an interface establishment request sent from a first access network device, where the interface establishment request includes a network supported by the first access network device The corresponding relationship between the slice NS indication information and the non-public network NPN identifier supported by the first access network device; the sending unit is configured to send an interface establishment response to the first access network device, and the interface establishment response includes all The identification of the NPN supported by the core network equipment.

In an eighteenth aspect, a communication device is provided, including: a receiving unit, configured to receive an interface establishment request sent from a first access network device, where the interface establishment request includes a network supported by the first access network device The corresponding relationship between the slice NS indication information and the CAG identifier of the closed access group supported by the first access network device; the sending unit is configured to send an interface establishment response to the first access network device, where the interface establishment response includes The identification of the CAG supported by the core network device.

With reference to the seventeenth aspect or the eighteenth aspect, in a possible implementation manner, the sending unit is further configured to send a session resource establishment request to the first access network device, where the session resource establishment request includes all Registered users of NS corresponding to the session.

In a nineteenth aspect, a communication device is provided, including a processor. The processor is coupled with the memory and can be used to execute instructions in the memory to implement the method in any one of the foregoing seventeenth aspect, the eighteenth aspect, or any one of the seventeenth aspect and the eighteenth aspect. Optionally, the communication device further includes a memory. Optionally, the communication device further includes a communication interface, and the processor is coupled with the communication interface.

In an implementation manner, the communication device is a core network device. When the communication device is a core network device, the communication interface may be a transceiver, or an input/output interface.

In another implementation manner, the communication device is a chip configured in a core network device. When the communication device is a chip configured in a core network device, the communication interface may be an input/output interface.

In a twentieth aspect, a processor is provided, including: an input circuit, an output circuit, and a processing circuit. The processing circuit is configured to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor executes any one of the first aspect to the eighth aspect and the first aspect to the eighth aspect. The method in the way.

In a specific implementation process, the foregoing processor may be a chip, the input circuit may be an input pin, the output circuit may be an output pin, and the processing circuit may be a transistor, a gate circuit, a flip-flop, and various logic circuits. The input signal received by the input circuit may be received and input by, for example, but not limited to, a receiver, and the signal output by the output circuit may be, for example, but not limited to, output to and transmitted by the transmitter, and the input circuit and output The circuit can be the same circuit, which is used as an input circuit and an output circuit at different times. The embodiments of the present application do not limit the specific implementation manners of the processor and various circuits.

In a twenty-first aspect, a processing device is provided, including a processor and a memory. The processor is used to read instructions stored in the memory, receive signals through a receiver, and transmit signals through a transmitter to execute any one of the first to eighth aspects and the first to eighth aspects. Method in.

Optionally, there are one or more processors and one or more memories.

Optionally, the memory may be integrated with the processor, or the memory and the processor may be provided separately.

In the specific implementation process, the memory can be a non-transitory (non-transitory) memory, such as a read only memory (ROM), which can be integrated with the processor on the same chip, or can be set in different On the chip, the embodiment of the present application does not limit the type of memory and the setting mode of the memory and the processor.

It should be understood that the related data interaction process, for example, sending instruction information may be a process of outputting instruction information from the processor, and receiving capability information may be a process of the processor receiving input capability information. Specifically, the processed output data can be output to the transmitter, and the input data received by the processor can come from the receiver. Among them, the transmitter and receiver can be collectively referred to as a transceiver.

The processing device in the above twenty-first aspect may be a chip. The processor may be realized by hardware or software. When realized by hardware, the processor may be a logic circuit, integrated circuit, etc.; when realized by software, the processor may be a general-purpose processor. This is achieved by reading the software code stored in the memory, the memory may be integrated in the processor, may be located outside the processor, and exist independently.

In a twenty-second aspect, a computer program product is provided. The computer program product includes: a computer program (also called code, or instruction), which when the computer program is executed, causes a computer to execute the first aspect above To the eighth aspect and any one of the possible implementation manners of the first to the eighth aspect.

In a twenty-third aspect, a computer-readable medium is provided, and the computer-readable medium stores a computer program (also referred to as code, or instruction) when it runs on a computer, so that the computer executes the above-mentioned first aspect To the eighth aspect and any one of the possible implementation manners of the first to the eighth aspect.

In a twenty-fourth aspect, a communication system is provided, including the aforementioned core network equipment, access network equipment, and terminal equipment.

Description of the drawings

FIG. 1 is a schematic diagram of a communication system 100 according to the method provided in an embodiment of the present application.

FIG. 2 is a schematic flowchart of a communication method provided by an embodiment of the present application.

FIG. 3 is a schematic flowchart of a communication method provided by another embodiment of the present application.

Fig. 4 is a schematic block diagram of a communication device provided by an embodiment of the present application.

FIG. 5 is a schematic block diagram of a communication device provided by another embodiment of the present application.

FIG. 6 is a schematic block diagram of a communication device provided by another embodiment of the present application.

FIG. 7 is a schematic block diagram of a communication device provided by another embodiment of the present application.

FIG. 8 is a schematic structural diagram of a communication device provided by an embodiment of the present application.

FIG. 9 is a schematic structural diagram of a communication device provided by another embodiment of the present application.

FIG. 10 is a schematic structural diagram of a communication device provided by another embodiment of the present application.

FIG. 11 is a schematic structural diagram of a communication device provided by another embodiment of the present application.

detailed description

The technical solution in this application will be described below in conjunction with the drawings.

The technical solutions of the embodiments of this application can be applied to various communication systems, such as: global system for mobile communications (GSM) system, code division multiple access (CDMA) system, broadband code division multiple access (wideband code division multiple access, WCDMA) system, general packet radio service (GPRS), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE Time division duplex (TDD), universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, the future fifth generation (5th generation, 5G) system or new radio (NR), etc.

To facilitate the understanding of the embodiments of the present application, first, a communication system suitable for the method provided in the embodiments of the present application will be described in detail with reference to FIG. 1. FIG. 1 shows a schematic diagram of a communication system 100 applicable to the method provided in the embodiment of the present application. As shown in the figure, the communication system 100 may include at least one network device, such as a base station (gNB) in the 5G system as shown in FIG. 1; the communication system 100 may also include at least one terminal device, as shown in FIG. User equipment (UE) 1 to UE 6. The access network device and each terminal device can communicate through wireless links. For example, the access network device can send configuration information to the terminal device, and the terminal device can send uplink data to the access network device based on the configuration information; for another example, the access network device can send downlink data to the terminal device.

The terminal devices in the communication system 100, such as UE 4 to UE 6, may also constitute a communication system. For example, UE 4 can control UE 5 and UE 6 to execute corresponding instructions. This application does not limit this.

The terminal equipment in the embodiments of this application may refer to user equipment, access terminals, user units, user stations, mobile stations, mobile stations, remote stations, remote terminals, mobile equipment, user terminals, terminals, wireless communication equipment, user agents, or User device. The terminal device can also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), and a wireless communication Functional handheld devices, computing devices, or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in the future 5G network or future evolution of the public land mobile network (PLMN) Terminal equipment, etc., this embodiment of the present application does not limit this.

It should be understood that the access network device in the communication system may be any device with a wireless transceiver function. The access network equipment includes but is not limited to: evolved Node B (eNB), radio network controller (RNC), node B (Node B, NB), base station controller (base station controller) , BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved NodeB, or home Node B, HNB), baseband unit (BBU), wireless fidelity (wireless fidelity, WiFi) The access point (AP), wireless relay node, wireless backhaul node, transmission point (TP) or transmission and reception point (TRP) in the system can also be 5G, For example, NR, gNB in the system, or transmission point (TRP or TP), one or a group of antenna panels (including multiple antenna panels) of the base station in the 5G system, or it can also be a gNB or transmission point. Network nodes, such as baseband unit (BBU), or distributed unit (DU), etc.

In some deployments, the gNB may include a centralized unit (CU) and a DU. The gNB may also include a radio unit (RU). CU implements some functions of gNB, DU implements some functions of gNB, for example, CU implements radio resource control (Radio Resource Control, RRC), Packet Data Convergence Protocol (PDCP) layer functions, DU implements wireless link The functions of radio link control (RLC), media access control (MAC) and physical (PHY) layers. Since the information of the RRC layer will eventually become the information of the PHY layer, or be transformed from the information of the PHY layer, under this architecture, high-level signaling, such as RRC layer signaling, can also be considered to be sent by DU , Or, sent by DU+CU. It can be understood that the network device may be a CU node, or a DU node, or a device including a CU node and a DU node. In addition, the CU can be divided into network equipment in the access network (radio access network, RAN), or CU can be divided into the access network equipment in the core network (core network, CN), which is not limited by this application.

In addition, in the embodiment of the present invention, the access network equipment provides services for the cell, and the terminal equipment communicates with the access network equipment through the transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell. It can be a cell corresponding to an access network device (such as a base station). The cell can belong to a macro base station or a base station corresponding to a small cell. The small cell here can include: metro cell, micro cell ( Micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmit power, and are suitable for providing high-rate data transmission services.

In addition, the carrier in the LTE system or the 5G system can have multiple cells working at the same frequency at the same time. In some special scenarios, the concept of the above-mentioned carrier and the cell can also be considered equivalent. For example, in a carrier aggregation (CA) scenario, when a secondary carrier is configured for a UE, the carrier index of the secondary carrier and the cell identification (Cell ID) of the secondary cell working on the secondary carrier will be carried at the same time. In this case, the concept of carrier and cell can be considered to be equivalent. For example, the UE accessing a carrier is equivalent to accessing a cell.

The core network device can be connected to multiple access network devices to control the access network device, and can distribute data received from the network side (for example, the Internet) to the access network device.

Among them, the functions and specific implementations of the terminal devices, access network devices, and core network devices listed above are only exemplary descriptions, and the present invention is not limited thereto.

It should also be understood that FIG. 1 is only a simplified schematic diagram of an example for ease of understanding, and the communication system 100 may also include other network devices or other terminal devices, which are not shown in FIG. 1.

To facilitate the understanding of the embodiments of the present application, first, a brief description of several concepts involved in the following is given.

1. System information block (SIB): It is a message, announcement, notice, reminder, etc. that the access network device releases to the terminal device in the form of information broadcast. It has message characteristics such as group sending and high reachability. Different SIBs can carry different parameters. For example, SIB 1 mainly carries information related to cell access and cell selection, and SIB2 can carry common radio resource configuration related parameters or related to intra-frequency, inter-frequency, or cross-standard cell reselection. Public information.

2. Tracking area (TA): includes one or more cells. In the case where the tracking area includes multiple cells, the multiple cells may belong to one access network device or multiple access network devices.

3. Registration area (RA): It includes one or more TAs. When the terminal device exceeds the coverage area of the RA, the terminal device will trigger the registration area to update.

4. Master node: In a dual-connection scenario, the master node establishes a control plane connection port with the core network device.

5. Secondary node: In a dual-connection scenario, the secondary node can provide terminal equipment with wireless resources other than the primary node.

6. Non-public network (NPN): A network deployed for non-public use, such as a network of a vertical manufacturer. NPN can be deployed in two ways: The first method is a stand-alone non-public network (SNPN), that is, the network does not rely on the functions provided by traditional operator networks (for example, PLMN); One way is a non-stand-alone non-public network (NSNPN), and the operation of this network requires the support of PLMN. In this article, NPN can be called a private network.

7. Network slice (NS): Includes complete network functions. A physical network can include one or more network slices. Different network slices can meet different service requirements, such as delay, bandwidth, security and Reliability, network slicing can flexibly respond to different network application scenarios.

8. Allowed network slices: when the registration area is updated or the terminal device initially accesses the network, the network slice identification information allocated by the core network device to the terminal device, the network slice identification information is used to indicate that the terminal device is in the current registration area The services that can be initiated, that is, the network slice to which the session that the terminal device can initiate can only belong to the allowed network slice.

The indication information of each network slice involved in any embodiment of this application may include network slice identification, single network slice selection assistance information (S-NSSAI), and access network slice Select at least one of the assistance information (RAN network slice selection assistance information, R-NSSAI).

Wherein, the network slice identifier can be represented by at least one of the following (1) to (7).

(1) Network slice type information, for example, network slice type information can indicate enhanced mobile broadband (eMBB), ultra-reliable low latency communications (URLLC), and massive machine communications (massive Machine Type Communication, mMTC) and other network slicing types. Optionally, the network slicing type information can also indicate the end-to-end network slicing type, including the RAN to the core network (core network, CN) network slicing type, or Refers to the RAN side network slice type, or the CN side network slice type.

(2) The service type information is related to specific services. For example, the service type information may indicate service characteristics such as video service, car networking service, voice service, etc., or specific service information.

(3) Tenant information, which is used to instruct customer information for creating or renting the network slice, such as Tencent, State Grid, etc.

(4) User group information, which is used to indicate grouping information for grouping users according to a certain characteristic, such as user level.

(5) The slice group information is used to indicate that according to a certain characteristic, for example, all network slices that can be accessed by the terminal device can be regarded as a slice group, or the network slice groups can also be divided according to other standards.

(6) Network slice instance information, used to indicate the instance identifier and characteristic information created for the network slice. For example, an identifier can be assigned to the network slice instance to indicate the network slice instance, or it can be in the network slice instance identifier. On the basis of mapping a new identifier and associating the network slice instance, the receiver can identify the specific network slice instance indicated by the identifier according to the identifier.

(7) A dedicated core network (DCN) identifier, which is used to uniquely indicate a dedicated core network in an LTE system or an enhanced LTE (eLTE) system, such as a dedicated core network for the Internet of Things, Optionally, the DCN identifier can be mapped with the network slice identifier, the network slice identifier can be mapped from the DCN identifier, and the DCN identifier can also be mapped through the network slice identifier.

Wherein, the S-NSSAI includes at least slice type/service type (SST) information, and optionally may also include slice differentiator (SD) information. The SST information is used to indicate the behavior of the network slicing, such as the characteristics of the network slicing and the service type. The SD information is the supplementary information of the SST. If the SST points to multiple network slicing implementations, the SD can correspond to only one network slicing instance.

Among them, R-NSSAI represents a group of specific S-NSSAI, that is, the identifier of a group of specific S-NSSAI.

It should be understood that, in the embodiments of the present application, the network slice may use at least one of the above parameters to characterize the indication information of the network slice. For example, the indication information of the network slice may be characterized by a network slice type, or may also be a network slice. Type and service type characterization, or service type plus tenant information characterization, etc., which are not limited in the embodiment of the present application, and how to characterize the network slice indication information of the network slice will not be described in detail below. Optionally, the specific encoding form of the indication information of the network slice is not limited, and different fields of the interface message carried between different devices represent the indication information of different network slices, or can be replaced by abstracted index values. The index value of corresponds to different network slices. Of course, in addition to the above-mentioned logo, it can also be other logos, which are not limited here. It should be understood that if the terminal device, the access network device, or the core network device supports multiple network slices, the indication information of the network slices supported by the terminal device, the access network device or the core network device may be embodied in the form of a list of at least one identifier described above .

9. Closed access group (CG): If an access network device or cell belongs to CAG, then only registered users of the CAG can access the access network device or cell, that is, only the CAG Only those users can be served by the access network equipment or the cell.

In the prior art, for the NPN network of the NS, network slicing can be used to meet the requirements, that is, each NPN network corresponds to one or more NSs, and each network slice can also correspond to multiple NPN networks, but NS The method cannot meet the requirements of CAG, that is, non-NPN users cannot be prohibited from accessing the NS corresponding to this NPN network.

Therefore, there is an urgent need to provide a method capable of preventing non-NPN users from accessing the NPN network or the NS corresponding to the NPN network.

In order to facilitate the understanding of the embodiments of the present application, before introducing the embodiments of the present application, the following descriptions are made.

First, in the embodiments of this application, "CAG" simply means that a certain access network device or a certain cell is a closed-access cell. The "CAG" can also be "CSG". The name of the group is not limited.

Second, in the embodiments of this application, "NPN" only refers to a certain private network, and this application does not limit the name of the private network.

Third, in the embodiments of the present application, the granularity of CAG and NPN can be cell granularity, or the granularity of CAG and NPN can also be tracking area (TA) granularity, or the granularity of CAG and NPN can also be common Land mobile network (public land mobile network, PLMN) granularity.

Fourth, in this embodiment of the application, the correspondence between the non-public network and the closed access group can be for the current registration area, or the correspondence between the non-public network and the closed access group can also be for each of the current registration areas. A PLMN.

Fifth, in the embodiments of the present application, "indications" may include direct indications and indirect indications, and may also include explicit indications and implicit indications. The information indicated by a certain piece of information (the first indication information described below) is called information to be indicated. In the specific implementation process, there are many ways to indicate the information to be indicated, for example, but not limited to, direct indication Information to be instructed, such as the information to be instructed itself or the index of the information to be instructed, etc. The information to be indicated can also be indicated indirectly by indicating other information, where there is an association relationship between the other information and the information to be indicated. It is also possible to indicate only a part of the information to be indicated, and other parts of the information to be indicated are known or agreed in advance. For example, it is also possible to realize the indication of specific information by means of the pre-arranged order (for example, stipulated in the agreement) of various information, thereby reducing the indication overhead to a certain extent.

Sixth, in the embodiments shown below, the first, second, and various numerical numbers are only for easy distinction for description, and are not used to limit the scope of the embodiments of the present application. For example, distinguish different instructions or messages.

Seventh, the “protocols” involved in the embodiments of the present application may refer to standard protocols in the communication field, for example, may include LTE protocol, NR protocol, and related protocols applied to future communication systems, which are not limited in this application.

Eighth, the "plurality" referred to in the embodiments of the present application refers to two or more. "The following one (a) or multiple (a)" or similar expressions refers to any combination of these items, including any combination of a single item (a) or plural items (a). For example, at least one or more of a, b, and c can represent: a, or b, or c, or a and b, or a and c, or b and c, or a , B and c, where a, b, c can be single or multiple.

Ninth, the pre-definition involved in the embodiments of the present application can be understood as definition, pre-definition, storage, pre-storage, pre-negotiation, pre-configuration, curing, or pre-fired.

The method provided in the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

It should be understood that the method provided in this application can be applied to a wireless communication system, for example, the wireless communication system 100 shown in FIG. 1. There is a wireless communication connection between two communication devices in the wireless communication system. One communication device of the two communication devices can correspond to any one of UE 1 to UE 6 shown in FIG. 1, for example, Any one of UE 1 to UE 6 in 1 may also be a chip configured in any one of UE 1 to UE 6; the other communication device of the two communication devices may correspond to the one shown in Figure 1 The shown gNB, for example, may be the gNB in FIG. 1, or may be a chip configured in the gNB.

Hereinafter, without loss of generality, the interaction between the terminal device and the network device is taken as an example to describe the embodiments of the present application in detail. It can be understood that any terminal device in the wireless communication system can communicate with one or more network devices having wireless communication connections based on the same method. This application does not limit this.

FIG. 2 is a schematic flowchart of a communication method 200 according to an embodiment of the present application, shown from the perspective of device interaction. As shown in the figure, the method may include step S210 to step S260. The steps in the method 200 are described in detail below.

Step S210: The first access network device receives a configuration update request sent by an operation and maintenance management station (operation, administration and maintenance, OAM). The configuration update request includes at least one of the following: NPN identifier supported by the first access network device, CAG identifier supported by the first access network device, NS indication information supported by the first access network device, and first access network device The correspondence between the supported NPN identifier and the NS indication information supported by the first access network device, and the correspondence between the CAG identifier supported by the first access network device and the NS indication information supported by the first access network device. The indication information of the NS supported by the first access network device is used to indicate the NS supported by the first access network device. Optionally, the foregoing configuration update request may also be a configuration request or a configuration command request, which is not limited in this application.

According to the above configuration update request, the first access network device can update the local CAG, NPN, NS, the correspondence between CAG and NPN, or the correspondence between CAG and NS. Exemplarily, the configuration update request may also include NPN identifiers supported by other access network devices including the first access network device, that is, the configuration update request includes NPN identifiers supported by multiple access network devices. The configuration update request may also include CAG identifiers supported by other access network devices including the first access network device, that is, the configuration update request includes CAG identifiers supported by multiple access network devices. The configuration update request may also include NS indication information supported by other access network devices including the first access network device, that is, the configuration update request includes NS indication information supported by multiple access network devices, where The NS indication information supported by the network device is used to indicate the NS supported by the access network device.

Optionally, the correspondence between the NPN identifier supported by the first access network device and the NS indication information supported by the first access network device may be the NPN indicated by the NPN identifier supported by the first access network device and the first access The corresponding relationship of the NS indicated by the NS indication information supported by the network device, or the corresponding relationship may indicate the NPN indicated by the NPN identifier supported by the first access network device and can be supported by the NS indication information supported by the first access network device NS, or the corresponding relationship may also indicate the NS indicated by the NS indication information supported by the first access network device included in the NPN indicated by the NPN identifier supported by the first access network device.

Optionally, the correspondence between the CAG identifier supported by the first access network device and the NS indication information supported by the first access network device may be the CAG indicated by the CAG identifier supported by the first access network device and the first access The corresponding relationship of the NS indicated by the NS indication information supported by the network device, or the corresponding relationship may indicate the NS indication information supported by the first access network device that the CAG indicated by the CAG identifier supported by the first access network device can support NS, or the correspondence relationship may also indicate the NS indicated by the NS indication information supported by the first access network device included in the CAG indicated by the CAG identifier supported by the first access network device.

It is understandable that for NSNPN, if the private network is supported by NS, that is, the private network can be represented as one or more network slices, then the configuration update request can include the CAG identifier supported by the first access network device, or it can It includes the NS indication information supported by the first access network device, and may also include the correspondence between the CAG identifier supported by the first access network device and the NS indication information supported by the first access network device.

It is understandable that for SNPN, the above configuration update request may include the NPN identifier supported by the first access network device, may also include the NS indication information supported by the first access network device, or may include the support supported by the first access network device. The corresponding relationship between the NPN identifier of and the NS indication information supported by the first access network device.

Step S220: The first access network device sends an interface establishment request to the core network device. The interface establishment request includes: the correspondence between the NS indication information supported by the first access network device and the NPN identifier supported by the first access network device, or the NS indication information supported by the first access network device and the first access Correspondence of CAG identifiers supported by network equipment. It can be understood that the interface establishment request may also be a first access network device update message.

Optionally, the aforementioned interface establishment request may further include at least one of the following: NS indication information supported by the first access network device, NPN identifier supported by the first access network device, or CAG identifier supported by the first access network device.

It is understandable that the NPN identifier supported by the first access network device may be of PLMN granularity, that is, for one or more PLMNs, the interface establishment request respectively includes the NPN identifier supported by the first access network device corresponding to the PLMN, Exemplarily, an optional expression form of the NPN identifier supported by the first access network device is as follows:

>Public land mobile network identity (PLMN ID)

>Non-public network identity (NPN ID)

The NPN ID may be one NPN ID or multiple NPN IDs, which is not limited in this application.

It is understandable that the NPN identifier supported by the first access network device may also be tracking area (TA) granularity, that is, the interface establishment request includes the first interface corresponding to the TAI for one or more TAIs. The NPN identifier supported by the network access device, for example, an optional expression form of the NPN identifier supported by the first access network device is as follows:

>Public land mobile network identity (PLMN ID)

>Tracking area code (TAC)

>Non-public network identity (NPN ID)

It is understandable that the CAG identifier supported by the first access network device may also be TAC granularity, cell granularity, or base station granularity.

It is understandable that the CAG identifier supported by the first access network device may be of PLMN granularity, that is, the interface establishment request for one or more PLMNs respectively includes the CAG identifier supported by the first access network device corresponding to the PLMN, Exemplarily, an optional expression form of the CAG identifier supported by the first access network device is as follows:

>Public land mobile network identity (PLMN ID)

>Closed access group identity (CAG ID)

The CAG ID can be one CAG ID or multiple CAG IDs, which is not limited in this application.

It is understandable that the CAG identifier supported by the first access network device may also be of TAI granularity, that is, for one or more TAIs in the interface establishment request, the CAG identifiers supported by the first access network device corresponding to the TAI are included respectively. Exemplarily, an optional expression form of the CAG identifier supported by the first access network device is as follows:

>Public land mobile network identity (PLMN ID)

>Tracking area code (TAC)

>Closed access group identity (CAG ID)

Optionally, in different scenarios, the content included in the foregoing interface establishment request may be different. The following two scenarios are taken as examples to introduce the content included in the interface establishment request in the two scenarios.

In a scenario, for example, in an SNPN scenario, the interface establishment request may include at least one of the following: an NPN identifier supported by the first access network device, and NS indication information supported by the first access network device.

Optionally, the interface establishment request may further include a correspondence between the NPN identifier supported by the first access network device and the NS indication information supported by the first access network device. The correspondence may be the correspondence between the NPN indicated by the NPN identifier supported by the first access network device and the NS indicated by the NS indication information supported by the first access network device, or the correspondence may indicate the first access network device The NPN indicated by the supported NPN identifier may support the NS indicated by the NS indicator information supported by the first access network device, or the correspondence relationship may also indicate the first included in the NPN indicated by the NPN identifier supported by the first access network device. The NS indicated by the NS indication information supported by the access network device.

It is understandable that the correspondence relationship between the NPN identifier and the NS indication information may be a group of NPN identifiers and NS indication information, or the correspondence relationship between the NPN identifier and NS indication information may also be multiple sets of NPN identifiers and NS indications. The correspondence of information is not limited in this application.

In another scenario, for example, in the NSNPN scenario, the interface establishment request may include at least one of the following: a CAG identifier supported by the first access network device, and NS indication information supported by the first access network device.

Optionally, the interface establishment request may further include a correspondence between the CAG identifier supported by the first access network device and the NS indication information supported by the first access network device. The correspondence may be the correspondence between the CAG indicated by the CAG identifier supported by the first access network device and the NS indicated by the NS indication information supported by the first access network device, or the correspondence may indicate the first access network device The CAG indicated by the supported CAG identifier can support the NS indicated by the NS indication information supported by the first access network device, or the corresponding relationship may also indicate the first included in the CAG indicated by the CAG identifier supported by the first access network device. The NS indicated by the NS indication information supported by the access network device.

It is understandable that the correspondence between the CAG identifier and the NS indication information may be a group of CAG identifiers and NS indication information, or the correspondence between the CAG identifier and NS indication information may also be multiple sets of CAG identifiers and NS indications. The correspondence of information is not limited in this application.

Step S230: The first access network device receives the interface establishment response sent from the core network device. The interface establishment response includes the CAG identifier supported by the core network device, or the interface establishment response includes the NPN identifier supported by the core network device. It can be understood that if step S210 contains the first access network device update message, this step may be the first access network device update confirmation message. It can also be understood that this step may also be a core network device update message. If this step is a core network device update message, step S230 can be implemented independently of S210 and S220.

Optionally, the aforementioned interface establishment request may also include at least one of the following: NS indication information supported by the core network device, correspondence between the NS indication information supported by the core network device and the CAG identifier supported by the core network device, or the core network device supports The corresponding relationship between the NS indication information and the NPN identifier supported by the core network device, where the NS indication information supported by the core network device is used to indicate the NS indicated by the core network device.

It is understandable that the NPN identification supported by the core network device may be of PLMN granularity, that is, the interface establishment response for one or more PLMNs respectively includes the NPN identification supported by the core network device corresponding to the PLMN. For example, the core An optional expression form of the NPN identification supported by the network equipment is as follows:

>Public land mobile network identity (PLMN ID)

>Non-public network identity (NPN ID)

It is understandable that the NPN identification supported by the core network device may also be of TAI granularity, that is, for one or more TAIs, the interface establishment response includes the NPN identification supported by the core network device corresponding to the TAI. For example, the An optional expression form of the NPN identification supported by the core network equipment is as follows:

>Public land mobile network identity (PLMN ID)

>Tracking area code (TAC)

>Non-public network identity (NPN ID)

It can be understood that the NPN identifier supported by the core network device may be TAC granularity or cell granularity or base station granularity.

It is understandable that the CAG identifier supported by the core network device may be of PLMN granularity, that is, the interface establishment response contains the CAG identifier supported by the core network device corresponding to the PLMN for one or more PLMNs. For example, the core network device An optional expression form of the CAG identifier supported by the network equipment is as follows:

>Public land mobile network identity (PLMN ID)

>Closed access group identity (CAG ID)

It is understandable that the CAG identifier supported by the core network device may be of TAI granularity, that is, for one or more TAIs in the interface establishment response, the CAG identifier supported by the core network device corresponding to the TAI is included. For example, the core An optional expression form of the CAG identifier supported by the network equipment is as follows:

>Public land mobile network identity (PLMN ID)

>Tracking area code (TAC)

>Closed access group identity (CAG ID)

It is understandable that the CAG identifier supported by the core network device may also be of TAC granularity, cell granularity, or base station granularity.

Optionally, in different scenarios, the content included in the interface establishment response may be different. The following two scenarios are taken as examples to introduce the content included in the interface establishment response in the two scenarios.

In a scenario, such as in an SNPN scenario, the interface establishment response may include at least one of the following: NPN identification supported by the core network device, and NS indication information supported by the core network device.

Optionally, the interface establishment response may also include the correspondence between the NPN identifier supported by the core network device and the NS indication information supported by the core network device. The correspondence may be the correspondence between the NPN indicated by the NPN identifier supported by the core network device and the NS indicated by the NS indication information supported by the core network device, or the correspondence may indicate that the NPN indicated by the NPN identifier supported by the core network device can support NS indicated by the NS indication information supported by the core network device, or the corresponding relationship may also indicate the NS indicated by the NS indication information supported by the core network device included in the NPN indicated by the NPN identifier supported by the core network device.

In another scenario, such as in a NSNPN scenario, the interface establishment response may include at least one of the following: CAG identification supported by the core network device, and NS indication information supported by the core network device.

Optionally, the interface establishment response may also include the correspondence between the CAG identifier supported by the core network device and the NS indication information supported by the core network device. The correspondence relationship may be the correspondence relationship between the CAG indicated by the CAG identifier supported by the core network device and the NS indicated by the NS indication information supported by the core network device, or the correspondence relationship may indicate that the CAG indicated by the CAG identifier supported by the core network device can support The NS indicated by the NS indication information supported by the core network device, or the corresponding relationship may also indicate the NS indicated by the NS indication information supported by the core network device included in the CAG indicated by the CAG identifier supported by the core network device.

It is understandable that the first access network device may determine or modify the correspondence between the CAG identifier supported by the first access network device and the NS indication information supported by the first access network device based on the interface establishment response, or the first access network device A correspondence between the NPN identifier supported by the access network device and the NS indication information supported by the first access network device.

Exemplarily, the first access network device may determine the correspondence between the CAG identifier supported by the first access network device and the NS indication information supported by the first access network device based on the interface establishment response, or the first access network device The device may determine the correspondence between the NPN identifier supported by the first access network device and the NS indication information supported by the first access network device based on the interface establishment response. For example, the configuration update request does not include the correspondence between the CAG identifier supported by the first access network device and the NS indication information supported by the first access network device, or the configuration update request does not include the first access network device The corresponding relationship between the supported NPN identifier and the NS indication information supported by the first access network device, then, after the first access network device receives the interface establishment response, the first access network device saves the interface establishment The correspondence between the CAG identifier supported by the core network device and the NS indication information supported by the core network device carried in the response, or the correspondence between the NPN identifier supported by the core network device and the NS indication information supported by the core network device relationship. And the first access network device uses the correspondence between the CAG identifier supported by the core network device and the NS indication information supported by the core network device to determine the CAG identifier supported by the first access network device and the first access network device support Or the first access network device uses the corresponding relationship between the NPN identifier supported by the core network device and the NS indication information supported by the core network device to determine the NPN supported by the first access network device The corresponding relationship between the identifier and the NS indication information supported by the first access network device. For example, the CAG supported by the first access network device can be CAG 1, CAG 2, and the NS supported by the first access network device can be NS 1, NS 2, NS 3, and NS 4. The configuration update request does not include CAG and CAG. Correspondence between NSs; the CAG supported by the core network equipment can be CAG 1, CAG 2, CAG 3, and the NS supported by the core network equipment can be NS 1, NS 2, NS 3, NS 4, NS 5, NS 6 NS 7. The corresponding relationship between the CAG identifier supported by the core network equipment and the NS indication information supported by the core network equipment is: CAG 1 corresponds to NS 1 and NS 2; CAG 2 corresponds to NS 3, NS 4, NS 5, and NS 6 ; CAG 3 corresponds to NS 7; then the first access network device compares the CAG identification supported by the first access network device with the first access based on the correspondence between the CAG identifier supported by the core network device and the NS indication information supported by the core network device The corresponding relationship of the NS indication information supported by the network equipment is determined as follows: CAG 1 corresponds to NS 1 and NS 2; CAG 2 corresponds to NS 3 and NS 4.

Exemplarily, the first access network device may modify the correspondence between the CAG identifier supported by the first access network device and the NS indication information supported by the first access network device based on the interface establishment response, or the first access network device The device may modify the correspondence between the NPN identifier supported by the first access network device and the NS indication information supported by the first access network device based on the interface establishment response. The configuration update request includes the correspondence between the CAG identifier supported by the first access network device and the NS indication information supported by the first access network device, or the configuration update request includes the NPN identifier supported by the first access network device and The corresponding relationship between the NS indication information supported by the first access network device, then after the first access network device receives the interface establishment response, the first access network device saves the information supported by the core network device carried in the interface establishment response The correspondence between the CAG identifier and the NS indication information supported by the core network device, or the relationship between the NPN identifier supported by the core network device and the NS indication information supported by the core network device carried in the interface establishment response of the first access network device Correspondence. And the first access network device uses the correspondence between the CAG identifier supported by the core network device and the NS indication information supported by the core network device to modify the CAG identifier supported by the first access network device and the NS supported by the first access network device. The corresponding relationship between the indication information, or the first access network device uses the corresponding relationship between the NPN identifier supported by the core network device and the NS indication information supported by the core network device to modify the NPN identifier supported by the first access network device and the first access network device. A correspondence between the NS indication information supported by the access network equipment. For example, the CAG supported by the first access network device can be CAG1 and CAG2, and the NS supported by the first access network device can be NS 1, NS 2, NS 3, NS 4, NS 5, NS 6, and the first access The correspondence between the CAG identifier supported by the network equipment and the NS indication information supported by the first access network equipment is determined as follows: CAG 1 corresponds to NS 1, NS 2, and NS 3; CAG 2 corresponds to NS 4, NS 5, and NS 6; and the core The CAG supported by network equipment can be CAG 1, CAG 2, CAG 3, and the NS supported by core network equipment can be NS 1, NS 2, NS 3, NS 4, NS 5, NS 6, and NS 7. Among them, core network equipment The correspondence between the supported CAG identifier and the NS indication information supported by the core network equipment is: CAG 1 corresponds to NS 1 and NS 2; CAG 2 corresponds to NS 3, NS 4, NS 5, and NS 6; CAG 3 corresponds to NS 7; then An access network device corresponds to the CAG identifier supported by the first access network device and the NS indicator information supported by the first access network device based on the corresponding relationship between the CAG identifier supported by the core network device and the NS indicator information supported by the core network device It is determined as follows: CAG 1 corresponds to NS 1, NS 2 and NS 3; CAG 2 corresponds to NS 4, NS 5 and NS 6.

It is understandable that the first access network device may also determine or modify the CAG identifier supported by the first access network device, the NS indication information supported by the first access network device, or the first access network device according to the interface establishment response Correspondence between the supported CAG identifier and the NS indication information supported by the first access network device. Alternatively, the first access network device may also determine or modify the NPN identifier supported by the first access network device, the NS indication information supported by the first access network device, or the NPN supported by the first access network device according to the interface establishment response The corresponding relationship between the identifier and the NS indication information supported by the first access network device. It is understandable that the CAG identifier or NPN identifier or NS indication information supported by the first access network device after the modification is reduced if compared with the CAG identifier or NPN identifier or NS indication information supported by the first access network device before the modification. (The reduced CAG identifier supported by the first access network device may be the first CAG identifier, or the reduced NPN identifier supported by the first access network device may be the first NPN identifier, or the reduced first access network device The NS indication information supported by the networked device may be the first NS indication information), which does not mean that the first access network device permanently does not support the first CAG identifier or the first NPN identifier or the first NS indication information, or does not already have The ability to support the first CAG identifier or the first NPN identifier or the first NS indication information is because the current core network device does not support the first CAG identifier or the first NPN identifier or the first NS indication information, and CAG, NPN and NS It is an end-to-end concept, resulting in the first access network device not needing to support related capabilities. If the core network device can support the first CAG identity or the first NPN identity or the first NS indication information in the future, the first access network device can support the first CAG identity or the first NPN identity or the first NS indication information.

Exemplarily, the first access network device may determine or modify the correspondence between the CAG identifier supported by the first access network device and the NS indication information supported by the first access network device based on the interface establishment response. If the CAG supported by the first access network device can be CAG1 and CAG2, and the NS supported by the first access network device can be NS 1, NS 2, NS 3, NS 4, NS 5, and NS 6, the configuration update request is in progress The included correspondence between the CAG identifier supported by the first access network device and the NS indication information supported by the first access network device is: CAG1 corresponds to NS 1, NS 2, and NS 3; CAG 2 corresponds to NS 4, NS 5, and NS 6 . The CAG supported by the core network device can be CAG 1 and CAG 3, the NS supported by the core network device can be NS 1, NS 2, and NS 7, and the CAG identifier supported by the core network device and the NS indication information supported by the core network device The corresponding relationship is: CAG1 corresponds to NS 1, and NS 2; CAG 3 corresponds to NS 7. Then the first access network device can be based on the CAG identifier supported by the core network device, the NS indication information supported by the core network device, and the core network device support The CAG identification of the first access network device supports the corresponding relationship between the NS indication information supported by the core network device. The CAG identification supported by the first access network device is modified to CAG 1; the first access network device supports the first The NS indication information supported by the access network device is modified to NS 1, and NS 2; the correspondence between the CAG identifier supported by the first access network device and the NS indication information supported by the first access network device is modified to: CAG 1 corresponds to NS 1 and NS 2. It is understandable that the first access network device may modify the correspondence between the CAG identifier supported by the first access network device and the NS indication information supported by the first access network device based on the interface establishment response, if the first An access network device broadcasts the CAG it supports, and the supported CAG identifier broadcast by the first access network device in the broadcast message only includes CAG1 but not CAG2.

In the communication method 200 provided by the embodiment of the present application, after performing step S210 and step S230, the core network device may immediately perform step S240, or perform step S240 within the first time, which may be 0 seconds. It can also be 60 seconds, and this application does not limit the first time.

Step S240: The terminal device receives the first message from the core network device. The first message may include the correspondence between the NS indication information supported by the terminal device and the NPN identifier supported by the terminal device, or the first message may include the correspondence between the NS indication information supported by the terminal device and the CAG identifier supported by the terminal device. Optionally, the first message may further include at least one of the following: NS indication information supported by the terminal device, NPN identifier supported by the terminal device, and CAG identifier supported by the terminal device. Optionally, the first message may further include at least one of the following: NS indication information supported by the first access network device, NPN identifier supported by the first access network device, CAG identifier supported by the first access network device, Correspondence between the network slice NS indication information supported by the first access network device and the NPN identifier supported by the first access network device. Or the first message may also include the correspondence between the indication information of the network slice NS supported by the first access network device and the CAG identifier supported by the first access network device. Optionally, the first message may also include at least one of the following: network slice NS indication information supported by the core network device, NPN identifier supported by the core network device, CAG identifier supported by the core network device, and network slice supported by the core network device The corresponding relationship between the NS indication information and the NPN identifier supported by the core network device. Or the first message may include the correspondence between the network slice NS indication information supported by the core network device and the CAG identifier supported by the core network device.

Optionally, the NPN identifier supported by the terminal device can be used to indicate the NPN supported by the terminal device. The NPN supported by the terminal device can be the NPN that the terminal can support in the current serving cell, that is, the terminal device supports in other cells. The NPN can be different from the NPN indicated by the NPN identifier supported by the terminal device; it can also be the NPN that the terminal can support in the current registration area, that is, all the cells in the current registration area of the terminal can support the terminal device support The NPN identifies the indicated NPN. When the terminal device moves out of the currently mentioned registration area, the NPN that the terminal device can support may be different from the NPN indicated by the NPN identifier supported by the terminal device; it can also be the NPN that the terminal device can support in the current tracking area to which it belongs. That is, all cells in the tracking area to which the terminal currently belongs can support the NPN indicated by the NPN identifier supported by the terminal device. When the terminal device moves out of the current tracking area, the NPN supported by the terminal can be the same as that supported by the terminal device. The NPN indicated by the NPN logo is different.

Optionally, the NS indication information supported by the terminal device may also be used to indicate the NS supported by the terminal device. The NS supported by the terminal device may be the NS that the terminal can support in the current serving cell, that is, the NS supported by the terminal device in other cells may be different from the NS indicated by the NS indication information supported by the terminal device; The NS that can be supported in the registration area to which the terminal belongs, that is, all cells in the registration area to which the terminal currently belongs can support the NS of the NS indication information supported by the terminal device. When the terminal moves out of the currently mentioned registration area, the NS that the terminal can support may be different from the NS indicated by the NS indication information supported by the terminal device; it can also be the NS that the terminal can support in the tracking area it currently belongs to, that is, the terminal All cells in the tracking area to which the terminal currently belongs can support the NS indicated by the NS indication information supported by the terminal device. When the terminal moves out of the current tracking area, the NS supported by the terminal can be the same as the NS indication supported by the terminal device. The NS indicated by the information is different.

Optionally, the CAG identifier supported by the terminal device may be used to indicate the CAG supported by the terminal device. The CAG supported by the terminal device can be the CAG that the terminal can support in the current serving cell, that is, the CAG supported by the terminal device in other cells can be different from the CAG indicated by the CAG identifier supported by the terminal device; it can also be the CAG that the terminal currently belongs to The CAG that can be supported in the registration area of the terminal, that is, all the cells in the current registration area that the terminal belongs to can support the CAG indicated by the CAG identifier supported by the terminal device. When the terminal moves out of the current registration area, the terminal can The supported CAG can be different from the CAG indicated by the CAG identifier supported by the terminal device; it can also be the CAG that the terminal can support in the tracking area to which the terminal currently belongs, that is, all cells in the tracking area to which the terminal currently belongs can support the terminal The CAG indicated by the CAG identifier supported by the device, when the terminal moves out of the currently described tracking area, the CAG supported by the terminal may be different from the CAG indicated by the CAG identifier supported by the terminal device.

It is understandable that the NPN identifier supported by the terminal device may be PLMN granularity, TAI granularity or TAC granularity, that is, the first message contains the corresponding PLMN, TAI, or TAC for one or more PLMNs, TAIs, or TACs. NPN identifier supported by the terminal device.

It is understandable that the NS indicated by the NS indication information supported by the terminal device may be PLMN granularity, TAI granularity or TAC granularity, that is, the first message contains the PLMN, TAI or TAC for one or more PLMNs, TAIs, or TACs, respectively. NS corresponding to TAC.

It is understandable that the CAG identifier supported by the terminal device may be PLMN granularity, TAI granularity or TAC granularity, that is, the first message for one or more PLMNs, TAIs, or TACs respectively contains the corresponding PLMN, TAI or TAC CAG identification supported by the terminal device.

Optionally, in different scenarios, the content included in the foregoing first message may also be different. The following uses two scenarios as examples to introduce the content of the first message in the two scenarios.

In a scenario, for example, in an SNPN scenario, the first message may include the correspondence between the NPN identifier supported by the terminal device and the NS indication information supported by the terminal device. Optionally, the correspondence relationship may be the correspondence relationship between the NPN indicated by the NPN identifier supported by the terminal device and the NS indicated by the NS indication information supported by the terminal device, or the correspondence relationship may indicate the NPN identifier supported by the terminal device. The NPN includes the NS indicated by the NS indication information supported by the terminal device, or the correspondence relationship may also indicate the NS indicated by the NS indication information supported by the terminal device that the NPN indicated by the NPN identifier supported by the terminal device can support.

Optionally, the first message may also include at least one of the following: NPN identification supported by the terminal device, NS indication information supported by the terminal device, NPN identification supported by the access network device, NS indication information supported by the access network device, The NPN identification supported by the core network equipment, the NS indication information supported by the core network equipment, the correspondence between the NPN identification supported by the core network equipment and the NS indication information supported by the core network equipment, or the NPN identification supported by the access network equipment and the connection The corresponding relationship between the NS indication information supported by the networked device.

It is understandable that the correspondence between the NPN identifier and the NS indication information may be a set of NPN identifiers and NS indication information, or the correspondence between the NPN identifier and NS indication information may also be multiple sets of NPN identifiers and NS indications. The correspondence of information is not limited in this application.

In another scenario, for example, in the NSNPN scenario, the first message may include the correspondence between the CAG identifier supported by the terminal device and the NS indication information supported by the terminal device. Optionally, the correspondence relationship may be the correspondence relationship between the CAG indicated by the CAG identifier supported by the terminal device and the NS indicated by the NS indication information supported by the terminal device, or the correspondence relationship may indicate the CAG identifier supported by the terminal device. The CAG includes the NS indicated by the NS indication information supported by the terminal device, or the corresponding relationship may also indicate the NS indicated by the NS indication information supported by the terminal device that the CAG indicated by the CAG identifier supported by the terminal device can support.

Optionally, the first message may further include at least one of the following: a CAG identifier supported by the terminal device, and NS indication information supported by the terminal device.

Optionally, the first message may further include at least one of the following: CAG identifier supported by the first access network device, NS indication information supported by the first access network device, or CAG identifier supported by the first access network device Correspondence with the NS indication information supported by the first access network device.

Optionally, the first message may further include at least one of the following: CAG identifier supported by the core network device, NS indication information supported by the core network device, or CAG identifier supported by the core network device and NS indication supported by the core network Correspondence between information.

It is understandable that the correspondence between the CAG identifier and the NS indication information may be a group of CAG identifiers and NS indication information, or the correspondence between the CAG identifier and NS indication information may also be multiple sets of CAG identifiers and NS indication information. The correspondence of information is not limited in this application.

Step S240: The terminal device receives the second message from the first access network device. The second message may include the CAG identifier supported by the first access network device, or the second message may include the NPN identifier supported by the first access network device.

Optionally, the CAG identifier supported by the first access network device may be the same as the CAG identifier supported by the first access network device in the interface establishment request, and the CAG identifier supported by the first access network device may also be the first The access network device determines or modifies the CAG supported by the first access network device or its serving cell based on the CAG identifier supported by the core network device.

Optionally, the NPN identifier supported by the first access network device may be the same as the NPN identifier supported by the first access network device in the interface establishment request, and the NPN identifier supported by the first access network device may also be the first The access network device determines or modifies the NPN supported by the first access network device or its serving cell based on the NPN identifier supported by the core network device.

In a scenario, for example, in an SNPN scenario, the second message may include the NPN identifier supported by the first access network device. In another scenario, such as in the NSNPN scenario, the second message may include the CAG identifier supported by the first access network device.

Step S260: The terminal device determines the NS supported by the first access network device. Optionally, the terminal device may determine the NS supported by the first access network device according to the first message and the second message.

Exemplarily, in a scenario, such as an SNPN scenario, the first message includes the correspondence between the NPN identifier supported by the terminal device and the NS indication information supported by the terminal device, and the second message includes the first access network device In the case of supported NPN identification, if the same NPN identification exists in the NPN identification supported by the first access network device and the NPN identification supported by the terminal device, the terminal device can communicate with the terminal according to the NS indication information supported by the terminal device in the first message The correspondence between the NPN identifier supported by the device and the NPN identifier supported by the first access network device in the second message determines the NS supported by the first access network device or the current serving cell. For example, the correspondence between the NPN identifier supported by the terminal device and the NS indication information supported by the terminal device included in the first message is: NPN1 corresponds to NS a, NS b, and NS c; NPN 2 corresponds to NS d, NS e, NS f; the NPN indicated by the NPN identifier supported by the first access network device contained in the second message is NPN1, then the terminal device can determine that the first access network device or the current serving cell can support NS as NS a, NS b, NS c.

Exemplarily, in another scenario, such as the NSNPN scenario, the first message includes the correspondence between the CAG identifier supported by the terminal device and the NS indication information supported by the terminal device, and the second message includes the first access network In the case of the CAG identifier supported by the device, if the same CAG identifier exists in the CAG identifier supported by the first access network device and the CAG identifier supported by the terminal device, the terminal device can follow the NS indication information supported by the terminal device in the first message The correspondence with the CAG identifier supported by the terminal device and the CAG identifier supported by the first access network device in the second message determines the NS supported by the first access network device or the current serving cell. For example, the correspondence between the CAG identifier supported by the terminal device and the NS indication information supported by the terminal device contained in the first message is: CAG1 corresponds to NS a, NS b, and NS c; CAG2 corresponds to NS d, NS e, NS f; The CAG indicated by the CAG identifier supported by the first access network device contained in the second message is CAG 1, then the terminal device can determine that the first access network device or the current serving cell can support NS as NS a, NS b , NS c.

The terminal device may determine the NS supported by the first access network device according to the correspondence between the NPN identifier in the first message and the NS indication information, and the NPN identifier supported by the first access network device in the second message; Alternatively, the terminal device may also determine the location of the first access network device based on the correspondence between the CAG identifier in the first message and the NS indication information, and the CAG identifier supported by the first access network device in the second message. If the NS is supported, the terminal device can know the NS supported by the access network device, so that the terminal device can access the corresponding network and perform services.

FIG. 3 is a schematic flowchart of a communication method 300 provided by another embodiment of the present application from the perspective of device interaction. As shown in the figure, the method may include step S210 to step S260, and step S310 to step S370. The steps in this method are described in detail below. Step S210 to step S260 refer to the description of step S210 to step S260 in the communication method 200 provided in FIG. 2, and details are not repeated here.

Step S310: The first access network device sends a third message to the terminal device. The third message and the second message can be sent together in the same message, or can be divided into two messages and sent separately from the second message. For example, the second message can be sent in SIB 1 or master information block (MIB) (that is, the smallest system message), and the third message can be sent in SIB 4 or SIB 9, that is, only the terminal device requests it. Only the access network device will send. Or, the second message and the third message are sent in the minimum system message at the same time, or the second message and the third message are sent in other SIB messages at the same time, such as SIB 4 or SIB 9, which is not covered by this application limited.

Optionally, the third message may include identification information of the cell. The identity of the cell may be the first cell, the first cell may be a neighboring cell of the current serving cell, the first cell may also belong to the second access network device, and the second access network device may be the first access network Access network equipment adjacent to the equipment.

Optionally, the cell identity may be PCI, global cell identity, or other forms of identification, which is not limited in this application.

Optionally, the third message may further include identification information of multiple cells, and the identities of the multiple cells may also be identities of neighboring cells in which the terminal device resides.

Optionally, the third message may also include one or more CAG identifiers. The CAG identifier may be the CAG identifier corresponding to the neighbor cell identifier of the cell where the terminal device resides.

Optionally, the third message may also include one or more NPN identifiers. The NPN identifier may be the NPN identifier corresponding to the neighbor cell identifier of the cell where the terminal device resides.

Optionally, the third message may also include capability information of the second access network device or the first cell, and the capability information of the second access network device is used to indicate whether the second access network device can serve as an auxiliary access Capability information of the network access device, the second access network device is the access network device where the first cell is located. The capability information of the first cell is used to indicate whether the first cell can serve as a second serving cell to provide services for users.

Optionally, the capability information of whether the second access network device can serve as an auxiliary access network device may be whether there is an interface connection between the second access network device and the first access network device.

Optionally, in the case that there is an interface between the first access network device and the second access network device, the second access network device may be used as an auxiliary access network device to serve the terminal device.

Optionally, the capability information of the first cell may be whether the first cell and the current serving cell belong to the same access network device. If the first cell and the current serving cell belong to the same access network device, the first cell can be used as the second serving cell of the terminal device, that is, the currently serving access network device can use carrier aggregation to combine the current serving cell with The first cell serves the terminal equipment at the same time; if the first cell and the current serving cell do not belong to the same access network equipment, it is necessary to determine whether the access network equipment to which the first cell belongs is the same as the access network to which the current serving cell belongs The device has a direct interface. If there is a direct interface, the first cell can be used as the second serving cell of the terminal device, that is, the current access network device can add the access network device to which the first cell belongs as an auxiliary access network device, thereby The current serving cell and the first cell are simultaneously provided with services for the terminal equipment in a dual-connection manner.

The terminal device may receive the first cell information of the first access network device sent from the first access network device, and may also receive the cell information of the second access network device sent from the first access network device terminal device, After receiving the information of multiple cells, the terminal device can measure the cell designated by the first access network device, so that the terminal device can get more services and meet the diversified service requirements of the terminal device.

Optionally, the foregoing step S310 and step S240 may be implemented in combination, or the foregoing step S310 and step S240 may be implemented independently, which is not limited in this application.

The terminal device can determine the NS supported by the first access network device and/or the second access network device based on the CAG identification or the NPN identification in step S250 and/or step S310, and then can initiate a first access network device Or a packet data unit (PDU) session corresponding to the NS supported by the second access network device.

Step S320: The terminal device sends a session establishment request to the core network device, where the session establishment request includes a registered user of the NS corresponding to the session. The session establishment request may also include the session identifier and the identifier of the NS corresponding to the session identifier.

Step S330: The first access network device receives a session resource establishment request sent from the core network device. The session resource establishment request includes the registered user of the NS corresponding to the session identifier. The session resource establishment request may also include the session identifier and the session. Identifies the identifier of the corresponding NS.

Through the registered users of the NS corresponding to the aforementioned session, the first access network device can know which cells or which base stations the current terminal device can access. If the first access network device cannot provide the current terminal device with the service of the NS corresponding to the session identifier, the first access network device needs to find a neighboring cell access network device that supports the service of the NS corresponding to the session identifier as The auxiliary access network equipment provides corresponding service requirements for the current terminal equipment.

Optionally, in the case that the first access network device can provide the terminal device with the service of the NS corresponding to the above-mentioned session identifier, step S340 and step S350 need not be performed.

Optionally, in the case that the first access network device cannot provide the terminal device with the service of the NS corresponding to the session identifier, step S340 and step S350 are performed.

Optionally, in step S340, the first access network device sends an increase request to the second access network device. The adding request includes the registered user of the NS corresponding to the above-mentioned session. The adding request may also include the session identifier and the identifier of the NS corresponding to the session identifier. The increase request may also include cell information that the terminal device can access. The cell information may be measurement report information, and the cell information may also be cell identification information.

Specifically, if the first access network device cannot establish the NS service corresponding to the above-mentioned session identifier, the first access network device needs to send an increase request to other access network devices. The system information in step S260 includes the capability information of the second access network device, that is, whether the second access network device can be used as the capability information of the auxiliary access network device, and the first access network device according to the system information, It is determined that the second access network device can be used as an auxiliary access network device, that is, the second access network device can provide the terminal device with the service of the NS corresponding to the session identifier.

Through the registered user of the NS corresponding to the session, the second access network device can know whether the current terminal device is the registered terminal device corresponding to the NS corresponding to the session. And through the registered users of the NS of the NS corresponding to the above-mentioned session, the second access network device can know which access network devices the current terminal device can access, thereby establishing the corresponding PDU session corresponding to the NS.

Optionally, in step S350, the first access network device receives an increase response from the second access network device. The increase response may be used to indicate that a session can be established between the terminal device and the second access network device under the corresponding NS.

It is understandable that in a scenario, that is, the first access network device is the primary access network device, and the second access network device can be used as the secondary access network device, the terminal can be implemented through the above steps S340 and S350. The equipment needs for corresponding NS business. In another scenario, the access network equipment is split into two parts, namely a centralized unit and a distributed unit. The centralized unit can replace the above-mentioned first access network equipment, and the distributed processing unit can replace the second access network. The device, that is, the above step S340 can be replaced by step S340', and the above step S350 can also be replaced by step S350', as shown by the dotted line in FIG.

Optionally, in step S340', the centralized unit of the first access network device sends a context establishment request to the distributed unit of the first access network device. The context establishment request includes the bearer identifier corresponding to the session to be established and the NS identifier corresponding to the bearer. Optionally, the context establishment request may also include a registered user of the NS corresponding to the session, a registered user of the NS, and an identifier of the NS corresponding to the session identifier.

Specifically, if the centralized unit of the first access network device cannot establish the NS service corresponding to the above-mentioned session identifier, the first access network device needs to send a context establishment request to the distributed unit of the first access network device.

Through the registered user of the NS corresponding to the session, the distributed unit of the first access network device can know whether the current terminal device is the registered terminal device corresponding to the NS corresponding to the session. And through the registered users of the NS of the NS corresponding to the aforementioned session, the distributed unit of the first access network device can know which cells the current terminal device can access, so as to establish the corresponding PDU session corresponding to the NS.

Optionally, in step S350', the centralized unit of the first access network device receives the context establishment response sent from the distributed unit of the first access network device. The context establishment response may be used to indicate that a session can be established between the terminal device and the distributed unit of the first access network device under the corresponding NS.

Step S360: The access network device sends a session establishment response to the core network device. The session establishment response may be used to indicate that the first access network device or the second access network device can provide the terminal device with a corresponding session under the corresponding NS.

Step S370: The terminal device receives the session resource establishment response sent by the core network device. The session resource establishment response is used to indicate that the terminal device can establish a corresponding session under the corresponding NS.

The terminal device transmits the NS supported by the first access network device and/or the NS supported by the second access network device sent by the first access network device, so that the terminal device can be connected to the first access network device or the second access network device. The PDU session is established under the NS supported by the network device, so as to realize the data transmission between the terminal device and the access network device.

It should be understood that, in the above embodiments, the size of the sequence number of each process does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of this application. .

Above, FIG. 2 and FIG. 3 illustrate the communication method provided by the embodiment of the present application in detail. Hereinafter, the communication device provided by the embodiment of the present application will be described in detail with reference to FIG. 4 to FIG. 11.

Fig. 4 is a schematic block diagram of a communication device provided by an embodiment of the present application. As shown in the figure, the communication device 400 may include a processing unit 410 and a receiving unit 420.

The receiving unit 420 is configured to receive a first message from a core network device, where the first message includes: a correspondence between indication information of a network slice NS supported by the terminal device and a non-public network NPN identifier supported by the terminal device;

The receiving unit 420 is further configured to receive a second message from the first access network device, where the second message is used to indicate the NPN identifier supported by the first access network device;

The processing unit 410 is configured to determine the NS supported by the first access network device.

Optionally, the receiving unit is further configured to receive a system message SIB from the first access network device, where the SIB includes information about the identity of the cell, and the cell is a neighboring cell of the cell where the terminal device resides.

Optionally, the SIB also includes the NPN identifier corresponding to the aforementioned cell.

Optionally, the SIB also includes capability information of the second access network device, and the capability information is used to indicate whether the second access network device can serve as the capability information of the auxiliary access network device, and the second access network device is the above The access network equipment where the cell is located.

Fig. 5 is a schematic block diagram of a communication device provided by an embodiment of the present application. As shown in the figure, the communication device 500 may include a processing unit 510 and a receiving unit 520.

The receiving unit 520 is further configured to receive a first message from the core network device, where the first message includes: a correspondence between the indication information of the network slice NS supported by the terminal device and the CAG identifier of the closed access group supported by the terminal device;

The receiving unit 520 is further configured to receive a second message from the first access network device, where the second message is used to indicate the CAG identifier supported by the first access network device;

The processing unit 510 is further configured to determine the NS supported by the first access network device.

Optionally, the SIB also includes the CAG identifier corresponding to the aforementioned cell.

Optionally, the SIB also includes capability information of the second access network device, and the capability information is used to indicate whether the second access network device can serve as the capability information of the auxiliary access network device. It is the access network equipment where the above-mentioned cell is located.

It should be understood that the communication device described in FIG. 4 and FIG. 5 may be a terminal device.

The communication device 400 and the communication apparatus 500 provided in the present application may correspond to the process performed by the terminal device in the above-mentioned method embodiments in FIGS. 2 to 3.

Fig. 6 is a schematic block diagram of a communication device provided by an embodiment of the present application. As shown in the figure, the communication device 600 may include a sending unit 610 and a receiving unit 620.

The receiving unit 620 is configured to obtain a non-public network NPN identifier supported by the first access network device;

The sending unit 610 is further configured to send a second message to the terminal device, where the second message is used to indicate the NPN identifier supported by the first access network device.

Optionally, the sending unit 610 is further configured to send a system message SIB to the terminal device, where the SIB includes information about the identity of the cell, and the cell is a neighboring cell of the cell where the terminal device resides.

Fig. 7 is a schematic block diagram of a communication device provided by an embodiment of the present application. As shown in the figure, the communication device 700 may include a sending unit 70 and a receiving unit 720.

The receiving unit 720 is configured to obtain the CAG identifier of the closed access group supported by the first access network device;

The sending unit 710 is further configured to send a second message to the terminal device, where the second message is used to indicate the CAG identifier supported by the first access network device.

Optionally, the sending unit 710 is further configured to send a system message SIB to the terminal device, where the SIB includes information about the identity of the cell, and the cell is a neighboring cell of the cell where the terminal device resides.

It should be understood that the communication apparatus described in FIG. 6 and FIG. 7 may be the first access network device.

The communication device 600 and the communication apparatus 700 provided in the present application may correspond to the process performed by the first access network device in the method embodiments in FIGS. 2 to 3 above.

FIG. 8 is a schematic structural diagram of a terminal device according to another embodiment of the present application. The communication device 800 in FIG. 8 may correspond to the above terminal device. As shown in FIG. 8, the communication device 800 includes a transceiver 810, a processor 820, and a memory 830.

Only one memory and processor are shown in Figure 8. In actual terminal equipment products, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or storage device. The memory may be set independently of the processor, or may be integrated with the processor, which is not limited in the embodiment of the present application.

The transceiver 810, the processor 820, and the memory 830 communicate with each other through internal connection paths, and transfer control and/or data signals.

Specifically, the transceiver 810 is configured to receive a first message from a core network device, and the first message includes: the correspondence between the network slice NS indication information supported by the terminal device and the non-public network NPN identifier supported by the terminal device; A second message of the first access network device, where the second message is used to indicate the NPN identifier supported by the first access network device.

Specifically, the processor 820 is configured to determine the NS supported by the first access network device.

For the specific working process and beneficial effects of the communication device 800, reference may be made to the description in the embodiment shown in FIG. 2 and FIG. 3, and details are not repeated here.

FIG. 9 is a schematic structural diagram of a terminal device according to another embodiment of the present application. The communication device 900 in FIG. 9 may correspond to the above terminal device. As shown in FIG. 9, the communication device 900 includes a transceiver 910, a processor 920, and a memory 930.

Only one memory and processor are shown in FIG. 9. In actual terminal equipment products, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or storage device. The memory may be set independently of the processor, or may be integrated with the processor, which is not limited in the embodiment of the present application.

The transceiver 910, the processor 920, and the memory 930 communicate with each other through internal connection paths, and transfer control and/or data signals.

Specifically, the transceiver 910 is configured to receive a first message from a core network device, and the first message includes: the correspondence between the network slice NS indication information supported by the terminal device and the non-public network CAG identifier supported by the terminal device; A second message of the first access network device, where the second message is used to indicate the CAG identifier supported by the first access network device.

Specifically, the processor 920 is configured to determine the NS supported by the first access network device.

For the specific working process and beneficial effects of the communication device 900, reference may be made to the description in the embodiment shown in FIG. 2 and FIG. 3, and details are not described herein again.

FIG. 10 is a schematic structural diagram of a terminal device according to another embodiment of the present application. The communication device 1000 in FIG. 10 may correspond to the above terminal device. As shown in FIG. 10, the communication device 1000 includes a transceiver 1010, a processor 1020, and a memory 1030.

Only one memory and processor are shown in FIG. 10. In actual terminal equipment products, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or storage device. The memory may be set independently of the processor, or may be integrated with the processor, which is not limited in the embodiment of the present application.

The transceiver 1010, the processor 1020, and the memory 1030 communicate with each other through internal connection paths, and transfer control and/or data signals.

Specifically, the transceiver 1010 is configured to obtain the non-public network NPN identifier supported by the first access network device; and send a second message to the terminal device, where the second message is used to indicate the NPN supported by the first access network device Logo.

For the specific working process and beneficial effects of the communication device 1000, reference may be made to the description in the embodiment shown in FIG. 2 and FIG. 3, and details are not described herein again.

FIG. 11 is a schematic structural diagram of a terminal device according to another embodiment of the present application. The communication device 1100 in FIG. 11 may correspond to the above terminal device. As shown in FIG. 11, the communication device 1100 includes a transceiver 1110, a processor 1120, and a memory 1130.

Only one memory and processor are shown in Figure 11. In actual terminal equipment products, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or storage device. The memory may be set independently of the processor, or may be integrated with the processor, which is not limited in the embodiment of the present application.

The transceiver 1110, the processor 1120, and the memory 1130 communicate with each other through internal connection paths, and transfer control and/or data signals.

Specifically, the transceiver 1110 is configured to obtain the CAG identifier of the closed access group supported by the first access network device; and send a second message to the terminal device, the second message being used to indicate the CAG supported by the first access network device CAG logo.

For the specific working process and beneficial effects of the communication device 1100, reference may be made to the description in the embodiment shown in FIG. 2 and FIG. 3, which will not be repeated here.

The transceiver in each embodiment of the present application may also be referred to as a transceiver unit, transceiver, transceiver, and so on. The processor may also be called a processing unit, a processing board, a processing module, a processing device, and so on. Optionally, the device for implementing the receiving function in the transceiver can be regarded as the receiving unit, and the device for implementing the sending function in the transceiver as the sending unit, that is, the transceiver includes the receiving unit and the sending unit. The receiving unit may sometimes be called a receiver, receiver, or receiving circuit. The transmitting unit may sometimes be called a transmitter, a transmitter, or a transmitting circuit.

The memory described in each embodiment of the present application is used to store computer instructions and parameters required for the operation of the processor.

The processor described in each embodiment of the present application may be an integrated circuit chip with signal processing capability. In the implementation process, the steps of the above method can be completed by hardware integrated logic circuits in the processor or instructions in the form of software. The processor described in each embodiment of the present application may be a general-purpose processor, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (ASIC), and a field programmable gate array (field programmable gate array). , FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor. The software module can be located in random access memory (RAM), flash memory, read-only memory (read-only memory, ROM), programmable read-only memory, or electrically erasable programmable memory, registers, etc. mature in the field Storage medium. The storage medium is located in the memory, and the processor reads the instructions in the memory and completes the steps of the above method in combination with its hardware.

In the various embodiments of this application, the size of the sequence number of each process does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute the implementation process of the embodiments of this application. Any restrictions.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware or any other combination. When implemented by software, it can be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center. Transmission to another website, computer, server or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a digital video disc (DVD)), or a semiconductor medium (for example, a solid state disk (SSD)), etc. .

A person of ordinary skill in the art may be aware that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and conciseness of description, the specific working process of the above-described system, device, and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

In addition, the functional units in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.

If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of this application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disk and other media that can store program code .

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application. Should be covered within the scope of protection of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

A communication method, characterized in that it comprises:

The terminal device receives a first message from the core network device, where the first message includes: a correspondence between the network slice NS indication information supported by the terminal device and the non-public network NPN identifier supported by the terminal device;

Receiving, by the terminal device, a second message from a first access network device, where the second message is used to indicate an NPN identifier supported by the first access network device;

The terminal device determines the NS supported by the first access network device.
A communication method, characterized in that it comprises:

The terminal device receives a first message from a core network device, where the first message includes: the correspondence between the network slice NS indication information supported by the terminal device and the CAG identifier of the closed access group supported by the terminal device;

Receiving, by the terminal device, a second message from a first access network device, where the second message is used to indicate a CAG identifier supported by the first access network device;

The terminal device determines the NS supported by the first access network device.
The method according to claim 1 or 2, wherein the method further comprises:

The terminal device receives a system message SIB from the first access network device, where the SIB includes information about the identity of a cell, and the cell is a neighboring cell of the cell where the terminal device resides.
The method according to claim 3, wherein the SIB further comprises an NPN identifier corresponding to the cell or a CAG identifier corresponding to the cell.
The method according to claim 3 or 4, wherein the SIB further includes capability information of a second access network device, and the capability information is used to indicate whether the second access network device can serve as an auxiliary access The capability information of the network access device, and the second access network device is the access network device where the cell is located.
A communication method, characterized in that it comprises:

The first access network device obtains the non-public network NPN identifier supported by the first access network device;

The first access network device sends a second message to the terminal device, where the second message is used to indicate the NPN identifier supported by the first access network device.
A communication method, characterized in that it comprises:

The first access network device obtains the CAG identifier of the closed access group supported by the first access network device;

The first access network device sends a second message to the terminal device, where the second message is used to indicate the CAG identifier supported by the first access network device.
The method according to claim 6 or 7, wherein the method further comprises:

The first access network device sends a system message SIB to the terminal device, where the SIB includes information about the identity of a cell, and the cell is a neighboring cell of the cell where the terminal device resides.
The method according to claim 8, wherein the SIB further includes an NPN identifier or CAG identifier corresponding to the cell.
The method according to claim 8 or 9, wherein the SIB further includes capability information of a second access network device, and the capability information is used to indicate whether the second access network device can serve as an auxiliary access The capability information of the network access device, and the second access network device is the access network device where the cell is located.
A communication device, characterized by comprising:

A receiving unit, configured to receive a first message from a core network device, the first message including: a correspondence between the network slice NS indication information supported by the terminal device and the non-public network NPN identifier supported by the terminal device;

The receiving unit is further configured to receive a second message from the first access network device, where the second message is used to indicate the NPN identifier supported by the first access network device;

The processing unit is configured to determine the NS supported by the first access network device.
A communication device, characterized by comprising:

A receiving unit, configured to receive a first message from a core network device, the first message including: a correspondence between the network slice NS indication information supported by the terminal device and the CAG identifier of the closed access group supported by the terminal device;

The receiving unit is further configured to receive a second message from the first access network device, where the second message is used to indicate the CAG identifier supported by the first access network device;

The processing unit is configured to determine the NS supported by the first access network device.
The apparatus according to claim 11 or 12, wherein the receiving unit is further configured to receive a system message SIB from the first access network device, the SIB including information about the identity of the cell, and the cell It is a neighboring cell of the cell where the terminal device resides.
The apparatus according to claim 13, wherein the SIB further comprises an NPN identifier or CAG identifier corresponding to the cell.
The apparatus according to claim 13 or 14, wherein the SIB further includes capability information of a second access network device, and the capability information is used to indicate whether the second access network device can serve as an auxiliary access network device. The capability information of the network access device, and the second access network device is the access network device where the cell is located.
A communication device, characterized by comprising:

A receiving unit, configured to obtain a non-public network NPN identifier supported by the first access network device;

The sending unit is configured to send a second message to the terminal device, where the second message is used to indicate the NPN identifier supported by the first access network device.
A communication device, characterized by comprising:

A receiving unit, configured to obtain a CAG identifier of a closed access group supported by the first access network device;

The sending unit is configured to send a second message to the terminal device, where the second message is used to indicate the CAG identifier supported by the first access network device.
The apparatus according to claim 16 or 17, wherein the sending unit is further configured to send a system message SIB to the terminal device, the SIB including information about the identity of the cell, and the cell is the terminal device The neighboring cell of the camping cell.
The apparatus according to claim 18, wherein the SIB further comprises an NPN identifier or CAG identifier corresponding to the cell.
The apparatus according to claim 18 or 19, wherein the SIB further includes capability information of a second access network device, and the capability information is used to indicate whether the second access network device can serve as an auxiliary access The capability information of the network access device, and the second access network device is the access network device where the cell is located.